1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andre [41]
3 years ago
6

At a particular music store, CDs are on sale at $12.00 for the first one purchased and $9.00 for each additional disc purchased.

Maria spends $84.00 on CDs. How many CDs has Maria purchased?
Mathematics
2 answers:
kondor19780726 [428]3 years ago
8 0
Maria bought 9 CDs. Hope I helped :)
Elanso [62]3 years ago
8 0

Answer:

Maria purchased 9 CDs

Step-by-step explanation:

Maria spends $84.00 on CDs. The first CD is $12,  the rest $9

As the CD have different price ,  first we have to discount the price of the first one,  and then we divide the rest by $9

Price First CD = $12 ,

We buy the first ,  so we get the rest of money  84-12=72

Price Rest =$9 ,  with the money that left ,  we can buy 72/9= 8

Total= 1 +8 =9

You might be interested in
Which describes the difference between the two sequences?
mash [69]

Answer:

its a)the first sequence is geometric bc of the common ratio of 2. the second sequence is arithmetic bc of the common difference of 7.

8 0
3 years ago
N-4=16 solve equation
gizmo_the_mogwai [7]

n - 4 = 16   Given

  + 4  + 4   Cancel out 4 to isolate n variable

n = 20

Prove.

20 - 4 = 16

16 = 16

True.

6 0
3 years ago
Read 2 more answers
Need help with cross multiplying
saw5 [17]
So to solve for this, we need to set up proportional fractions, which I will help show you how to do.
First, if we are given an amount out of a total, we need to put it over x (if we are looking for the total). It looks like this:
12/x, 12 being the given number and x being the total.
If we are given the total but are looking for an amount, put the total at the bottom of the fraction (aka the denominator). It looks like this: x/16, 16 being the total amount and x being the amount out of the total.
We have a total of 40 test problems, so we can put our total at the bottom, x/40.
X is the amount of questions answered correctly (we are looking for x in the question).
We have answered 80% correct, so put 80% over 100 (100 being the total). It should look like this: 80/100.
Now we have our two fractions: x/40 & 80/100.
Set these up as an equation.
x/40 = 80/100.
Now this is where things may get tricky if you don't pay attention.
Multiply the numerator (the top number of a fraction) of x/40 by the denominator (the bottom number of a fraction) of 80/100.
Your product equation should look like this:
x times 100. This will give is 100x. Leave it at that.
Now, multiply the denominator of x/40 (the bottom number of the fraction) by the numerator (the top number of a fraction) of 80/100. It should look like this:
80 x 40. This will give us 3200.
Now set up our products as an equation.
100x = 3200.
To solve for x, divide both sides by 100.
3200/100 = 32.
x = 32.
I hope this helps and has taught you something!
4 0
3 years ago
The following data points are the yearly salaries (in thousands of dollars) of the 4 high school cheerleading
GarryVolchara [31]

Answer:

6

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
a rectangle has an area of 34 sqaure feet. A larger rectangle has an area of 124 sqaure feet. what is the percent increase of th
amid [387]

Answer:

<u>The difference in areas:</u>

  • 124 - 34 = 90 square feet

<u>Percent increase:</u>

  • 90/34*100% = 264.71%
5 0
2 years ago
Other questions:
  • The domain of y = csc x is given by x≠nπ. True or False?
    13·2 answers
  • Please i need help on this
    13·1 answer
  • Which scale would produce the smallest drawing
    14·1 answer
  • In the surface area formula for cylinders, which expression represents lateral area
    5·1 answer
  • A cube-shaped box has a volume of 64 cubic inches. If the box is packed full of cubes with edge lengths of 1 inch, how many cube
    5·2 answers
  • A contractor records all of the bedroom areas, in square feet, of a five-bedroom house as: 100, 100, 120, 120, 180 What is the v
    12·2 answers
  • What is 6/9 simplified?
    8·2 answers
  • at the zoo the polar bears are fed 0.77 bucket of fish day. The penguins are fed 0.8 that amount. How much of a bucket are the p
    12·1 answer
  • Find the equation of the line that contains the point (-4, -4) and is perpendicular to the line 4x + 5y = 5. Write the line in s
    9·1 answer
  • Please helppp me anyone​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!